MCP VerifyThe rating layer for AI agents

agent-observatory-sensor.nolimit-observatory.workers.dev/s/referrer-ok/mcp

Graded A by MCP Verify under grade/v1, sealed in snapshot REL-SNAP-084 on 27 October 2026. Recorded reachable in 46 of 46 observations since 12 September 2026.

The record behind itOne mark per snapshot, and every grade sealed along the way.

grade/v1
sealed in REL-SNAP-084

Sealed grades: UNGRADED from REL-SNAP-039 to REL-SNAP-051, A from REL-SNAP-052 to REL-SNAP-084.

  • Reachable
  • Reachable, asked to sign in or pay
  • Not reachable
  • Not observed
Transport
streamable-http
Tools listed
31
Tool schema fingerprint
0834b3628a665779…changed 2 times on the record
Name reported by the server
Referrer-Policy token, value discardedself-reported, never used as identity
Registry names (not anchored)
io.github.sadri-dridi/referrer-okas the registry listed it; not covered by the chain
First and last observed
12 Sep 2026 to 27 Oct 2026

Observations

Newest first. Each row is a separate look, not a summary.

Observed (UTC)SnapshotRecorded asLatencyToolsTool schema
2026-10-27 09:26REL-SNAP-084OK57 ms310834b3628a665779…
2026-10-26 09:27REL-SNAP-083OK60 ms310834b3628a665779…
2026-10-25 09:22REL-SNAP-082OK43 ms310834b3628a665779…
2026-10-24 09:21REL-SNAP-081OK55 ms310834b3628a665779…
2026-10-23 10:32REL-SNAP-080OK48 ms310834b3628a665779…
2026-10-22 10:08REL-SNAP-079OK71 ms310834b3628a665779…
2026-10-21 09:49REL-SNAP-078OK71 ms310834b3628a665779…
2026-10-20 10:18REL-SNAP-077OK46 ms310834b3628a665779…
Show all 46 observations
2026-10-19 10:29REL-SNAP-076OK45 ms310834b3628a665779…
2026-10-18 09:30REL-SNAP-075OK60 ms310834b3628a665779…
2026-10-17 09:29REL-SNAP-074OK49 ms310834b3628a665779…
2026-10-16 09:41REL-SNAP-073OK49 ms310834b3628a665779…
2026-10-15 09:45REL-SNAP-072OK46 ms310834b3628a665779…
2026-10-14 09:51REL-SNAP-071OK55 ms310834b3628a665779…
2026-10-13 09:53REL-SNAP-070OK48 ms310834b3628a665779…
2026-10-12 10:34REL-SNAP-069OK132 ms310834b3628a665779…
2026-10-11 09:27REL-SNAP-068OK46 ms310834b3628a665779…
2026-10-10 09:28REL-SNAP-067OK53 ms310834b3628a665779…
2026-10-09 09:31REL-SNAP-066OK49 ms310834b3628a665779…
2026-10-08 09:42REL-SNAP-065OK50 ms310834b3628a665779…
2026-10-07 09:53REL-SNAP-064OK56 ms310834b3628a665779…
2026-10-06 09:28REL-SNAP-063OK54 ms310834b3628a665779…
2026-10-05 10:17REL-SNAP-062OK48 ms310834b3628a665779…
2026-10-04 09:44REL-SNAP-061OK79 ms310834b3628a665779…
2026-10-03 09:37REL-SNAP-060OK47 ms310834b3628a665779…
2026-10-02 09:34REL-SNAP-059OK79 ms310834b3628a665779…
2026-10-01 09:38REL-SNAP-058OK85 ms310834b3628a665779…
2026-09-30 10:02REL-SNAP-057OK47 ms310834b3628a665779…
2026-09-29 09:58REL-SNAP-056OK61 ms310834b3628a665779…
2026-09-28 10:11REL-SNAP-055OK53 ms310834b3628a665779…
2026-09-27 09:57REL-SNAP-054OK44 ms310834b3628a665779…
2026-09-26 09:44REL-SNAP-053OK44 ms310834b3628a665779…
2026-09-25 10:07REL-SNAP-052OK52 ms310834b3628a665779…
2026-09-24 10:11REL-SNAP-051OK55 ms310834b3628a665779…
2026-09-23 10:15REL-SNAP-050OK45 ms31912b636a998c67c2…
2026-09-22 09:54REL-SNAP-049OK54 ms30457ee6187990d278…
2026-09-21 09:38REL-SNAP-048OK57 ms30457ee6187990d278…
2026-09-20 09:57REL-SNAP-047OK45 ms30457ee6187990d278…
2026-09-19 09:41REL-SNAP-046OK42 ms30457ee6187990d278…
2026-09-18 09:55REL-SNAP-045OK57 ms30457ee6187990d278…
2026-09-17 10:05REL-SNAP-044OK59 ms30457ee6187990d278…
2026-09-16 10:21REL-SNAP-043OK51 ms30457ee6187990d278…
2026-09-15 09:57REL-SNAP-042OK57 ms30457ee6187990d278…
2026-09-14 10:07REL-SNAP-041OK49 ms30457ee6187990d278…
2026-09-13 10:03REL-SNAP-040OK58 ms30457ee6187990d278…
2026-09-12 09:36REL-SNAP-039OK51 ms30457ee6187990d278…

Checking this record

Each observation above is a leaf of the merkle root published with its snapshot. A proof shows a record is in the archive. It does not show the measurement is correct.

Latest root, REL-SNAP-084

ed182ac44848117a98c9536eabbd63d33a756c4db072812094c742e3fa1fdef6

Published at

gist.github.com/181cc5f4834e0a4f812acde9a5efdb95

Is agent-observatory-sensor.nolimit-observatory.workers.dev/s/referrer-ok/mcp reliable?
Its sealed grade is A (grade/v1, sealed in REL-SNAP-084). Grades run from A to F by how consistently an endpoint was recorded reachable. A grade describes the record; it is not a guarantee.
When was it last checked?
27 October 2026, in snapshot REL-SNAP-084, where it was recorded as OK.
Has its tool list changed?
Yes. Its tool schema fingerprint changed 2 times on the record. Each change is dated in the observations below.